Cooking Directions

Step 1

Preheat grill to high.

Step 2

Combine allspice, cumin, ginger, salt, cinnamon, coriander and cayenne in a medium bowl. Sprinkle steaks with 2 1/4 teaspoons of the spice mixture. Add sweet potato and onion to the bowl along with oil and zest; toss to coat.

Step 3

Place two 24-inch sheets of foil on top of each other (the double layers will help protect the ingredients from burning). Generously coat the top piece with cooking spray. Spread the sweet potato mixture in the center of the foil in a thin layer. Bring the short ends of foil together, fold over and pinch to seal. Pinch the seams together along the sides to seal the packet.

Step 4

Place the packet on the hottest part of the grill and cook, turning once, about 5 minutes per side. Cook the steaks, turning once, 3 to 4 minutes per side for medium-rare. Transfer to plates and let rest while the packets finish cooking. Open the packets (be careful of steam) and serve alongside the steaks.